IBM 2109 Service Guide - Page 59

you are dealing with a long cable or one where both ends cannot be accessed, at the switch

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6. If the indicator does show slow green, test it further by using the switch diagnostic crossPortTest command. See "crossPortTest" on page 103. 7. If it is not possible or appropriate to access the switch in this fashion, replace the short cable. If it is an IBM-approved cable, ask the customer to replace it. If you are dealing with a long cable or one where both ends cannot be accessed at the switch, you need to have the cable installer test the cable. Chapter 4. Maintenance action plans 43

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6.
If the indicator does show slow green, test it further by using the switch
diagnostic
crossPortTest
command. See “crossPortTest” on page 103.
7.
If it is not possible or appropriate to access the switch in this fashion, replace
the short cable. If it is an IBM-approved cable, ask the customer to replace it. If
you are dealing with a long cable or one where both ends cannot be accessed
at the switch, you need to have the cable installer test the cable.
Chapter 4. Maintenance action plans
43